CN101612804A - Two-stage stroke mechanical press - Google Patents

Two-stage stroke mechanical press Download PDF

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Publication number
CN101612804A
CN101612804A CN200810039872A CN200810039872A CN101612804A CN 101612804 A CN101612804 A CN 101612804A CN 200810039872 A CN200810039872 A CN 200810039872A CN 200810039872 A CN200810039872 A CN 200810039872A CN 101612804 A CN101612804 A CN 101612804A
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CN
China
Prior art keywords
control
quick
air pressure
mechanical press
stage stroke
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Pending
Application number
CN200810039872A
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Chinese (zh)
Inventor
刘谷林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Huaqi Intelligent Machinery Equipment Co., Ltd.
Original Assignee
SHANGHAI SHENGAN BRAKE MANUFACTURING Co Ltd
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Priority to CN200810039872A priority Critical patent/CN101612804A/en
Publication of CN101612804A publication Critical patent/CN101612804A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B1/00Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/10Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism
    • B30B1/16Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism operated by fluid-pressure means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

The present invention relates to a stamping machine.A kind of stamping machine is disclosed, comprise: rack unit, punching press driver part and control assembly, described punching press driver part comprises quick drive disk assembly and nominal pressure generation component, the efferent of described quick drive disk assembly carries out quick straight line lifting reciprocating action, when the efferent of described quick drive disk assembly arrives desired location, make the work of exerting pressure of described nominal generation part by control assembly.The present invention adopts punching press driving process to adopt secondary fragmentary works principle, in forcing press idle stroke scope and backhaul process, can obtain the high-speed mobile speed of per minute 20-100 secondary frequencies; And the work low energy consumption, one of percentage that only is the forcing press nominal pressure drives energy to 40 conducts.When the fast moving parts reached setting value soon, nominal pressure generation component began to carry out work.The present invention has efficient, energy-conservation, reduction of discharging, low consumption, safe, practical, economic dispatch advantage.

Description

Two-stage stroke mechanical press
Technical field
The present invention relates to a kind of cold-formed pressing equipment of machinery that is used for, is exactly a kind of the two poles of the earth stroke mechanical press specifically.
Background technology
In traditional mechanical cold-formed field, pressing equipment is widely adopted.The pressing equipment of countries in the world is divided into three major types at present:
(1) NC turret punch machine (swiveling head) accounts for total amount 3/1000ths.Because cost is more expensive, use maintenance difficulty bigger, so be difficult to promote the use of.
(2) hydraulic press accounts for one of total amount percentage.Hydraulic press is because process velocity is low, and per minute operates in 10-20 time, so generally be suitable as the use of technology such as stretching.
(3) punching machine accounts for total amount more than percent 95.Punching machine is because process velocity is fast, and per minute can 20 times to 150 times (high-speed high-performance exception), so can be widely-used in the punching press industry.
Punching machine is divided into two big classes: 1. positive clutch and 2. friction clutch.Positive clutch is widely used in developing country, and friction clutch is widely used in developed country.Shortcomings such as rigid clutch pressing machine has that noise is big, poor safety performance, energy consumption are big.Friction clutch forcing press noise and security performance are better than positive clutch, and energy consumption is a little more than positive clutch, but cost is one times of positive clutch, and lathe weight is greater than positive clutch (also calculating with 63T), and various parts standard spares are more than positive clutch.
The NC turret punch machine cost is more expensive, and punching machine has above-mentioned shortcoming.The advantage of hydraulic press has many, how to solve low this defective of hydraulic press process velocity, is a problem that is worth research.
All exist a common problem for above-mentioned three class pressing equipments, that be exactly when needed power is with punching press in the stroke way energy needed as many so cause the huge waste of the energy.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of two-stage stroke mechanical press, the punching press driving process of this two-stage stroke mechanical press adopts two-stage fragmentary works principle, when idle stroke and backhaul, only need less energy to make punching press driver part fast moving, in impulse stroke, make the work of nominal pressure parts generation part, finish the punching press action.This two-stage stroke mechanical press can effectively improve the working (machining) efficiency of punching press, energy savings.
Problem solved by the invention can realize by the following technical solutions:
Two-stage stroke mechanical press comprises: rack unit, punching press driver part and control assembly is characterized in that described punching press driver part comprises:
One is arranged on the quick drive disk assembly on the described rack unit, and this quick drive disk assembly carries the punch components of existing machinery forcing press and carries out quick straight line lifting reciprocating action;
One nominal pressure generation component, this nominal pressure generation component drive described punch components workpiece are implemented the punching press action;
One control assembly, the signal detection end of described control assembly is in order to detect the operating position of described punch components, and the control drive end control nominal pressure generation component of described control assembly produces the action of exerting pressure.
In the present invention, described nominal pressure parts are arranged between described quick drive disk assembly and the punch components, directly described punch components are exerted pressure.Perhaps described nominal pressure parts are arranged between described quick drive disk assembly and the described rack unit, by described quick drive disk assembly described punch components are exerted pressure.
In the present invention, described quick drive disk assembly comprises:
One force-increasing mechanism,
One is arranged on the quick propulsion cylinder on the rack unit, and the piston push rod of this quick propulsion cylinder connects with described force-increasing mechanism, promotes the quick straight line lifting of described force-increasing mechanism and moves back and forth.
Described force-increasing mechanism is an elbow formula linkage, this elbow formula linkage comprises upper and lower connecting rod, the upper end of described upward connecting rod is hinged by first bearing pin and described rack unit, the lower end of described lower link is hinged by second bearing pin and described nominal pressure generation component, hinged by the 3rd bearing pin between the described upper and lower connecting rod, the piston push rod of described quick propulsion cylinder and described the 3rd bearing pin are hinged.
Perhaps, described force-increasing mechanism is an elbow formula linkage, this elbow formula linkage comprises upper and lower connecting rod, the upper end of described upward connecting rod is hinged by first bearing pin and described nominal pressure generation component, the lower end of described lower link is hinged by second bearing pin and described punch components, hinged by the 3rd bearing pin between the described upper and lower connecting rod, the piston push rod of described quick propulsion cylinder and described the 3rd bearing pin are hinged.
Between described force-increasing mechanism and described nominal pressure generation component, set up the high parts of regulating of a mould.Perhaps between described force-increasing mechanism and described punch components, set up the high parts of regulating of a mould.
Nominal pressure generation component of the present invention comprises at least one and more than one air pressure or hydraulic booster cylinder.Described more than one air pressure or hydraulic booster cylinder adopt series system to connect.
Control assembly of the present invention comprises an air pressure detecting sensor and a control device in order to detect described quick propulsion cylinder, the signals collecting end of this control device is connected with described air pressure detecting sensor signal, control end connects the gas circuit or the oil circuit of described air pressure or hydraulic booster cylinder, controls air pressure or the action of hydraulic booster cylinder by the through and off of control gas circuit or oil circuit.
Perhaps, control assembly of the present invention comprises one in order to detect travel switch one control device of described force-increasing mechanism present position, the signals collecting end of this control device is connected with described travel switch signal, gas circuit or oil circuit that control end connects described air pressure or hydraulic booster cylinder connect, and control air pressure or the action of hydraulic booster cylinder by the through and off of control gas circuit or oil circuit.
Perhaps, control assembly of the present invention comprises one in order to detect a photoelectric sensor and the control device whether described punch components is in the operating position, the signals collecting end of this control device is connected with described photo-sensor signal will, gas circuit or oil circuit that control end connects described air pressure or hydraulic booster cylinder connect, and control air pressure or the action of hydraulic booster cylinder by the through and off of control gas circuit or oil circuit.
The present invention adopts punching press driving process to adopt secondary fragmentary works principle, in forcing press idle stroke scope and backhaul process, adopts the fast moving parts, can obtain the high-speed mobile speed of per minute 20-100 secondary frequencies; And the work low energy consumption, one of percentage that only is the forcing press nominal pressure drives energy to 40 conducts.When the fast moving parts reached setting value soon, second level power both nominal pressure generation component began to carry out work, carries out punching press according to actual T position nominal pressure, and this section nominal pressure stroke only is 5 percent of forcing press total kilometres-40 from 3mm-40mm.Therefore, the present invention has efficient, energy-conservation, reduction of discharging, safe, practical, economic dispatch advantage.
Description of drawings
Further specify the present invention below in conjunction with the drawings and specific embodiments.
Fig. 1 is the principle schematic that the punch components of the embodiment of the invention 1 rises to highest order.
Fig. 2 is the principle schematic that the punch components of the embodiment of the invention 1 drops to lowest order.
Fig. 3 is the principle schematic of the embodiment of the invention 2.
Fig. 4 is the principle schematic of the embodiment of the invention 3.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Embodiment 1
Referring to Fig. 1 and Fig. 2, two-stage stroke mechanical press comprises rack unit 100, and this rack unit 100 comprises board 110, upper guide post seat 120 and four guide pillars, and four guide pillars are installed in (not shown) between board 110 and the upper guide post seat 120.Four interior formation working regions, zone that guide pillar constitutes.Diel 2 is installed on the board between four guide pillars.
Fast speed driving mechanism in the punching press driver part of present embodiment comprises quick propulsion cylinder 210 and force-increasing mechanism, and force-increasing mechanism is an elbow formula linkage, the upper end of the last connecting rod 220 of this elbow formula linkage is hinged with upper guide post seat 120 by first bearing pin 230, the high silk braid of regulating in the parts 310 of the lower end of lower link 240 and mould is hinged by second bearing pin 250, high screw mandrel 320 1 ends of regulating in the parts of mould are screwed in the silk braid 310, and the other end adopts the bulb free bearing to be connected with nominal pressure generation component 400.Hinged between last connecting rod 220 and the lower link 240 by the 3rd bearing pin 260.Propulsion cylinder 210 can be directly installed on the upper guide post seat 120 fast, also can install by support.The piston push rod 211 of propulsion cylinder 210 and the 3rd bearing pin 260 are by hinged with hinge pin seat fast.The stretching motion of the piston push rod 211 of so quick propulsion cylinder 210, just can drive elbow formula linkage just like people's elbow joint equally stretches with crooked, and the stretching, extension of elbow formula linkage just can drive nominal pressure generation component 400 quick straight line liftings and move back and forth with crooked.
Nominal pressure generation component 400 adopts several air pressure or hydraulic booster cylinder 410 to be in series, this nominal pressure generation component 400 also comprises a take-up housing 420, four guide pin bushings are installed on this take-up housing 420, take-up housing 420 can be moved up and down along four guide pillars, thereby assurance nominal pressure generation component 400 can be moved reposefully.
Air pressure in the top in several air pressure or the hydraulic booster cylinder 410 or hydraulic booster cylinder 410 are installed on the take-up housing 420, the axis of the piston of bottom air pressure or hydraulic booster cylinder 410 is fixedlyed connected with punch components 500, and punch components 500 is identical with the punch components of existing forcing press.Series relationship between adjacent two air pressure or the hydraulic booster cylinder 410 is: the axis of the piston of top air pressure or hydraulic booster cylinder 410 is connected with the piston of next air pressure or hydraulic booster cylinder 410.The quantity of air pressure or hydraulic booster cylinder 410 can be set according to the nominal pressure of forcing press.Nominal pressure is big more, and the required quantity of air pressure or hydraulic booster cylinder 410 is many more.
The control assembly of present embodiment comprises an air pressure detecting sensor 610, control device 620 and a magnetic valve or fuel tap 630, air pressure detecting sensor 710 is arranged in the air feed loop of quick propulsion cylinder 210, the signals collecting end of control device 620 is connected with air pressure detecting sensor 610 signals, control end is electrically connected magnetic valve or fuel tap 630, and magnetic valve or fuel tap 630 are arranged in the gas circuit or oil circuit of some air pressure or hydraulic booster cylinder 410.After the piston push rod of quick propulsion cylinder 210 stretches out fully, that is to say that elbow formula linkage finishes stretching, extension (referring to Fig. 2), last connecting rod 220 and lower link 240 are on the vertical line, this is that the pressure that detects in the quick propulsion cylinder 210 of air pressure detecting sensor 610 is the highest, air pressure detecting sensor 610 converts detected maximum pressure value to the signal of telecommunication, is input in the control device 620.Control device 620 is given magnetic valve or fuel tap 630 power supplies by after the comparison operation by control end, and magnetic valve or fuel tap 630 are open-minded, and some air pressure or 410 quick actings of hydraulic booster cylinder drive punch components and implement the punching press action.After punching press 1 action was finished, the piston push rod of propulsion cylinder 210 returned lock fast fast, made elbow formula linkage be contracted to the state of Fig. 1, waited for punching press action once.
The control device 620 of this embodiment is well known to those skilled in the art, and is not doing detailed description at this.
Embodiment 2
Referring to Fig. 3, the nominal pressure generation component 400 of present embodiment also is to adopt several air pressure or hydraulic booster cylinder 410 to be in series, air pressure in the top in several air pressure or the hydraulic booster cylinder 410 or hydraulic booster cylinder 410 are installed on the upper guide post seat 120, the last connecting rod 220 of the elbow formula linkage in the axis of the piston of bottom air pressure or hydraulic booster cylinder 410 and the fast speed driving mechanism is hinged by first bearing pin 230, the high silk braid of regulating in the parts 310 of the lower end of the lower link 240 of elbow formula linkage and mould is hinged by second bearing pin 250, high screw mandrel 320 1 ends of regulating in the parts of mould are screwed in the silk braid 310, and other end employing bulb free bearing and punch components 500 are hinged.
The control assembly of present embodiment comprises one stroke switch 640, the trip switch 640 is installed in a side of the last connecting rod 220 or the lower link 240 of elbow formula linkage, to detect the position of upper and lower connecting rod 220,240, the signals collecting end of control device 620 is connected with travel switch 640 signals, control end is electrically connected magnetic valve or fuel tap 630, and magnetic valve or fuel tap 630 are arranged in the gas circuit or oil circuit of some air pressure or hydraulic booster cylinder 410.After the piston push rod of quick propulsion cylinder 210 stretches out fully, that is to say that elbow formula linkage finishes stretching, extension (referring to Fig. 2), last connecting rod 220 and lower link 240 are on the vertical line, and travel switch 640 actions at this moment are input to a switched electrical signal in the control device 620.Control device 620 is given magnetic valve or fuel tap 630 power supplies by after the comparison operation by control end, and magnetic valve or fuel tap 630 are open-minded, and some air pressure or 410 quick actings of hydraulic booster cylinder drive punch components and implement the punching press action.After punching press 1 action was finished, the piston push rod of propulsion cylinder 210 returned lock fast fast, made elbow formula linkage be contracted to the state of Fig. 1, waited for punching press action once.
The present embodiment remainder is with embodiment 1.
Embodiment 3
Referring to Fig. 4, the control assembly of present embodiment comprises a photoelectric sensor 650, and this photoelectric sensor 650 is installed on the board 110, to detect the position of nominal pressure generation component 400.The signals collecting end of control device 620 is connected with travel switch 640 signals, and control end is electrically connected magnetic valve or fuel tap 630, and magnetic valve or fuel tap 630 are arranged in the gas circuit or oil circuit of some air pressure or hydraulic booster cylinder 410.After the piston push rod of quick propulsion cylinder 210 stretches out fully, that is to say that elbow formula linkage finishes stretching, extension (referring to Fig. 2), last connecting rod 220 and lower link 240 are on the vertical line, nominal pressure generation component 400 arrives position to be punched, at this moment the optical signal of photoelectric sensor 650 is stopped by nominal pressure generation component 400, and photoelectric sensor 650 produces a signal of telecommunication and is input in the control device 620.Control device 620 is given magnetic valve or fuel tap 630 power supplies by after the comparison operation by control end, and magnetic valve or fuel tap 630 are open-minded, and some air pressure or 410 quick actings of hydraulic booster cylinder drive punch components and implement the punching press action.After punching press 1 action was finished, the piston push rod of propulsion cylinder 210 returned lock fast fast, made elbow formula linkage be contracted to the state of Fig. 1, waited for punching press action once.
The principle of the invention can be made into various models such as the former open type of punching machine, enclosed, tilting-type.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.

Claims (12)

1. two-stage stroke mechanical press, comprising: rack unit, punching press driver part and control assembly is characterized in that described punching press driver part comprises:
One is arranged on the quick drive disk assembly on the described rack unit, and this quick drive disk assembly carries the punch components of existing machinery forcing press and carries out quick straight line lifting reciprocating action;
One nominal pressure generation component, this nominal pressure generation component drive described punch components workpiece are implemented the punching press action;
One control assembly, the signal detection end of described control assembly is in order to detect the operating position of described punch components, and the control drive end control nominal pressure generation component of described control assembly produces the action of exerting pressure.
2. two-stage stroke mechanical press according to claim 1 is characterized in that, described nominal pressure parts are arranged between described quick drive disk assembly and the punch components, directly described punch components are exerted pressure.
3. two-stage stroke mechanical press according to claim 1 is characterized in that, described nominal pressure parts are arranged between described quick drive disk assembly and the described rack unit, by described quick drive disk assembly described punch components are exerted pressure.
4. two-stage stroke mechanical press according to claim 2 is characterized in that, described quick drive disk assembly comprises:
One force-increasing mechanism,
One is arranged on the quick propulsion cylinder on the rack unit, and the piston push rod of this quick propulsion cylinder connects with described force-increasing mechanism, promotes the quick straight line lifting of described force-increasing mechanism and moves back and forth.
Described force-increasing mechanism is an elbow formula linkage, this elbow formula linkage comprises upper and lower connecting rod, the upper end of described upward connecting rod is hinged by first bearing pin and described rack unit, the lower end of described lower link is hinged by second bearing pin and described nominal pressure generation component, hinged by the 3rd bearing pin between the described upper and lower connecting rod, the piston push rod of described quick propulsion cylinder and described the 3rd bearing pin are hinged.
5. two-stage stroke mechanical press according to claim 3, it is characterized in that, described force-increasing mechanism is an elbow formula linkage, this elbow formula linkage comprises upper and lower connecting rod, the upper end of described upward connecting rod is hinged by first bearing pin and described nominal pressure generation component, the lower end of described lower link is hinged by second bearing pin and described punch components, and hinged by the 3rd bearing pin between the described upper and lower connecting rod, the piston push rod of described quick propulsion cylinder and described the 3rd bearing pin are hinged.
6. two-stage stroke mechanical press according to claim 4 is characterized in that, sets up the high parts of regulating of a mould between described force-increasing mechanism and described nominal pressure generation component.
7. two-stage stroke mechanical press according to claim 5 is characterized in that, sets up the high parts of regulating of a mould between described force-increasing mechanism and described punch components.
8. according to claim 4 or 5 described two-stage stroke mechanical press, it is characterized in that described nominal pressure generation component comprises at least one and more than one air pressure or hydraulic booster cylinder.
9. two-stage stroke mechanical press according to claim 8 is characterized in that, described more than one air pressure or hydraulic booster cylinder adopt series system to connect.
10. two-stage stroke mechanical press according to claim 8, it is characterized in that, control assembly comprise an air pressure detecting sensor and a control device in order to detect described quick propulsion cylinder, the signals collecting end of this control device is connected with described air pressure detecting sensor signal, control end connects the gas circuit or the oil circuit of described air pressure or hydraulic booster cylinder, controls air pressure or the action of hydraulic booster cylinder by the through and off of control gas circuit or oil circuit.
11. two-stage stroke mechanical press according to claim 8, it is characterized in that, control assembly comprise one in order to detect travel switch one control device of described force-increasing mechanism present position, the signals collecting end of this control device is connected with described travel switch signal, gas circuit or oil circuit that control end connects described air pressure or hydraulic booster cylinder connect, and control air pressure or the action of hydraulic booster cylinder by the through and off of control gas circuit or oil circuit.
12. two-stage stroke mechanical press according to claim 1, it is characterized in that, described control assembly comprises one in order to detect a photoelectric sensor and the control device whether described punch components is in the operating position, the signals collecting end of this control device is connected with described photo-sensor signal will, gas circuit or oil circuit that control end connects described air pressure or hydraulic booster cylinder connect, and control air pressure or the action of hydraulic booster cylinder by the through and off of control gas circuit or oil circuit.
CN200810039872A 2008-06-27 2008-06-27 Two-stage stroke mechanical press Pending CN101612804A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103480790A (en) * 2012-06-14 2014-01-01 苏州工业园区高登威科技有限公司 Single stamping and fixing method of workpiece
CN103568350A (en) * 2012-08-02 2014-02-12 张华隆 Hydraulic modifying device for double-disk friction press
CN107364163A (en) * 2017-09-05 2017-11-21 嘉兴大道锻造技术咨询有限公司 A kind of Multifunctional hydraulic press
CN109353060A (en) * 2018-11-06 2019-02-19 南通力友液压机制造有限公司 Fro hydraulic driving machinery formula powder former
CN109611407A (en) * 2019-01-21 2019-04-12 东莞市福莱利机械科技有限公司 A kind of two-pass pushing driving structure
CN110125224A (en) * 2019-06-24 2019-08-16 广东虹瑞智能设备股份有限公司 A kind of Multi-stage ram lathe
CN111037987A (en) * 2019-12-28 2020-04-21 西安交通大学 State monitoring signal processing method for multi-link mechanism of large mechanical press

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1117409A (en) * 1994-06-14 1996-02-28 村田机械株式会社 Apparatus for driving reciprocating punching
JP2002144100A (en) * 2000-11-15 2002-05-21 Murata Mach Ltd Hydraulic punch press
CN1743167A (en) * 2005-05-20 2006-03-08 江苏富力数控机床有限公司 Mechanical press servo driving device
CN101130283A (en) * 2006-08-21 2008-02-27 村田机械株式会社 Linear motor mounted press machine and method for controlling linear motor mounted press machine
CN201272034Y (en) * 2008-06-27 2009-07-15 上海盛安制动器制造有限公司 Two-stage stroke mechanically-operated press

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1117409A (en) * 1994-06-14 1996-02-28 村田机械株式会社 Apparatus for driving reciprocating punching
JP2002144100A (en) * 2000-11-15 2002-05-21 Murata Mach Ltd Hydraulic punch press
CN1743167A (en) * 2005-05-20 2006-03-08 江苏富力数控机床有限公司 Mechanical press servo driving device
CN101130283A (en) * 2006-08-21 2008-02-27 村田机械株式会社 Linear motor mounted press machine and method for controlling linear motor mounted press machine
CN201272034Y (en) * 2008-06-27 2009-07-15 上海盛安制动器制造有限公司 Two-stage stroke mechanically-operated press

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103480790A (en) * 2012-06-14 2014-01-01 苏州工业园区高登威科技有限公司 Single stamping and fixing method of workpiece
CN103568350A (en) * 2012-08-02 2014-02-12 张华隆 Hydraulic modifying device for double-disk friction press
CN103568350B (en) * 2012-08-02 2017-05-10 张华隆 Hydraulic modifying device for double-disk friction press
CN107364163A (en) * 2017-09-05 2017-11-21 嘉兴大道锻造技术咨询有限公司 A kind of Multifunctional hydraulic press
CN109353060A (en) * 2018-11-06 2019-02-19 南通力友液压机制造有限公司 Fro hydraulic driving machinery formula powder former
CN109611407A (en) * 2019-01-21 2019-04-12 东莞市福莱利机械科技有限公司 A kind of two-pass pushing driving structure
CN110125224A (en) * 2019-06-24 2019-08-16 广东虹瑞智能设备股份有限公司 A kind of Multi-stage ram lathe
CN110125224B (en) * 2019-06-24 2020-10-13 广东虹瑞智能设备股份有限公司 Multistage punching press lathe
CN111037987A (en) * 2019-12-28 2020-04-21 西安交通大学 State monitoring signal processing method for multi-link mechanism of large mechanical press

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